|Radioactive Decay||is the process by which an unstable atomic nucleus loses energy by emitting ionizing particles or radiation|
|Half-Life||The time it takes for one-half of the atoms of an unstable element or nuclide to decay radioactively into another element or nuclide|
|Entropy||is the measure of the disorder or randomness of energy and matter in a system.|
|Organism||An individual form of life that is capable of growing, metabolizing nutrients, and usually reproducing|
|Population||A group of individuals of the same species occupying a particular geographic area.|
|Community||A group of organisms or populations living and interacting with one another in a particular environment.|
|Ecosystem||An ecosystem is a system where populations of species group together into communities and interact with each other and the abiotic environment.|
|Decomposer||an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances.|
|Adaptation||the ability of a species to survive in a particular ecological niche, esp. because of alterations of form or behavior brought about through natural selection.|
|Mutation||A change of the DNA sequence within a gene or chromosome of an organism resulting in the creation of a new character or trait not found in the parental type.|
|Gene||A segment of DNA, occupying a specific place on a chromosome, that is the basic unit of heredity.|
|Trait||Any observable feature, or trait, of an organism, whether acquired or inherited.|
|Chromosome||Organic structure that carries an organism's genetic code (DNA).|
|Gene Pool||Sum total of all the genes found in the individuals of the population of a particular species.|
|Natural Selection||The process by which organisms that are better suited to their environment than others produce more offspring|
|Biodiversity||The number, variety, and genetic variation of different organisms found within a specified geographic region.|
|Extinction||Disappearance of a species from all or part of their geographic range|
|Plate Tectonics||Theory suggesting that the Earth's surface is composed of a number of oceanic and continental plates.|
|Weathering||Physical, chemical or biological breakdown of rocks and minerals into smaller sized particles|
|Climate Change||any long-term significant change in the weather patterns of an area; also used figuratively|
|Organic vs. Inorganic||Organic: (1) Relating to an organism.
(2) Derived from an organism.
|Natural vs. Synthetic||Natural :
Not produced or changed artificially; not conditioned
|Law of Conservation of Matter||During an ordinary chemical change, there is no detectable increase or decrease in the quantity of matter|
|1st law of thermodynamics||an expression of the principle of conservation of energy, states that energy can be transformed (changed from one form to another), but cannot be created or destroyed|
|2nd law of thermodynamics||is an expression of the universal principle of decay observable in nature.|
|Producers/ Autotrophs||Autotrophs make their own food by performing photosynthesis.|
|Consumers/ Heterotrophs||get their food by living off and on other organisms.|
|Photosynthesis (reactants and products)||The reactants of photosynthesis are sun light, carbon dioxide, and water.
The products of photosynthesis are carbohydrates, ATP, and sugars.
|Aerobic vs. Anaerobic|| Presence of molecular oxygen.
Occurring only in the presence of molecular oxygen.
Growing in the presence of molecular oxygen.
|Rocks Vs. Minerals||Rocks:
A compact and consolidated mass of mineral matter. Three types of rock are recognized: igneous, sedimentary, and metamorphic.
|Climate Vs. Weather||Climate:
General pattern of weather conditions for a region over a long period time (at least 30 years).
|Cellular Respiration||The process of cell catabolism in which cells turn food into usable energy in the form of ATP.|
|Kinetic vs. Potential energy||Kinetic:
The energy possessed by a system or object as a result of its motion.